| package cdn |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| import ( |
| "database/sql" |
| "errors" |
| "net/http" |
| "strings" |
| |
| "github.com/apache/trafficcontrol/lib/go-tc" |
| "github.com/apache/trafficcontrol/lib/go-util" |
| "github.com/apache/trafficcontrol/traffic_ops/traffic_ops_golang/api" |
| "github.com/apache/trafficcontrol/traffic_ops/traffic_ops_golang/util/monitorhlp" |
| ) |
| |
| func GetHealth(w http.ResponseWriter, r *http.Request) { |
| inf, userErr, sysErr, errCode := api.NewInfo(r, nil, nil) |
| if userErr != nil || sysErr != nil { |
| api.HandleErr(w, r, inf.Tx.Tx, errCode, userErr, sysErr) |
| return |
| } |
| defer inf.Close() |
| |
| health, err := getHealth(inf.Tx.Tx) |
| if err != nil { |
| api.HandleErr(w, r, inf.Tx.Tx, http.StatusInternalServerError, nil, errors.New("getting cdn health: "+err.Error())) |
| return |
| } |
| |
| api.WriteResp(w, r, health) |
| } |
| |
| func GetNameHealth(w http.ResponseWriter, r *http.Request) { |
| inf, userErr, sysErr, errCode := api.NewInfo(r, []string{"name"}, nil) |
| if userErr != nil || sysErr != nil { |
| api.HandleErr(w, r, inf.Tx.Tx, errCode, userErr, sysErr) |
| return |
| } |
| defer inf.Close() |
| |
| health, err := getNameHealth(inf.Tx.Tx, tc.CDNName(inf.Params["name"])) |
| if err != nil { |
| api.HandleErr(w, r, inf.Tx.Tx, http.StatusInternalServerError, nil, errors.New("getting cdn name health: "+err.Error())) |
| return |
| } |
| |
| api.WriteResp(w, r, health) |
| } |
| |
| func getHealth(tx *sql.Tx) (tc.HealthData, error) { |
| monitors, err := monitorhlp.GetURLs(tx) |
| if err != nil { |
| return tc.HealthData{}, errors.New("getting monitors: " + err.Error()) |
| } |
| return getMonitorsHealth(tx, monitors) |
| } |
| |
| func getNameHealth(tx *sql.Tx, name tc.CDNName) (tc.HealthData, error) { |
| monitorURLs, err := monitorhlp.GetURLs(tx) |
| if err != nil { |
| return tc.HealthData{}, errors.New("getting monitors: " + err.Error()) |
| } |
| monitors, ok := monitorURLs[name] |
| monitorURLs = nil |
| if ok { |
| monitorURLs = map[tc.CDNName][]string{name: monitors} |
| } |
| return getMonitorsHealth(tx, monitorURLs) |
| } |
| |
| func getMonitorsHealth(tx *sql.Tx, monitors map[tc.CDNName][]string) (tc.HealthData, error) { |
| client, err := monitorhlp.GetClient(tx) |
| if err != nil { |
| return tc.HealthData{}, errors.New("getting monitor client: " + err.Error()) |
| } |
| |
| totalOnline := uint64(0) |
| totalOffline := uint64(0) |
| cgData := map[tc.CacheGroupName]tc.HealthDataCacheGroup{} |
| for cdn, monitorFQDNs := range monitors { |
| success := false |
| errs := []error{} |
| for _, monitorFQDN := range monitorFQDNs { |
| crStates, err := monitorhlp.GetCRStates(monitorFQDN, client) |
| if err != nil { |
| errs = append(errs, errors.New("getting CRStates for CDN '"+string(cdn)+"' monitor '"+monitorFQDN+"': "+err.Error())) |
| continue |
| } |
| crConfig, err := monitorhlp.GetCRConfig(monitorFQDN, client) |
| if err != nil { |
| errs = append(errs, errors.New("getting CRConfig for CDN '"+string(cdn)+"' monitor '"+monitorFQDN+"': "+err.Error())) |
| continue |
| } |
| cgData, totalOnline, totalOffline = addHealth(cgData, totalOnline, totalOffline, crStates, crConfig) |
| success = true |
| break |
| } |
| if !success { |
| return tc.HealthData{}, errors.New("getting health data from all Traffic Monitors failed for CDN '" + string(cdn) + "': " + util.JoinErrs(errs).Error()) |
| } |
| } |
| |
| healthData := tc.HealthData{TotalOffline: totalOffline, TotalOnline: totalOnline} |
| for _, health := range cgData { |
| healthData.CacheGroups = append(healthData.CacheGroups, health) |
| } |
| return healthData, nil |
| } |
| |
| // addHealth adds the given cache states to the given data and totals, and returns the new data and totals |
| func addHealth(data map[tc.CacheGroupName]tc.HealthDataCacheGroup, totalOnline uint64, totalOffline uint64, crStates tc.CRStates, crConfig tc.CRConfig) (map[tc.CacheGroupName]tc.HealthDataCacheGroup, uint64, uint64) { |
| for cacheName, avail := range crStates.Caches { |
| cache, ok := crConfig.ContentServers[string(cacheName)] |
| if !ok { |
| continue |
| } |
| if cache.ServerStatus == nil || *cache.ServerStatus != tc.CRConfigServerStatus(tc.CacheStatusReported) { |
| continue |
| } |
| if cache.ServerType == nil || !strings.HasPrefix(string(*cache.ServerType), string(tc.CacheTypeEdge)) { |
| continue |
| } |
| if cache.CacheGroup == nil { |
| continue // TODO warn? |
| } |
| |
| cgHealth := data[tc.CacheGroupName(*cache.CacheGroup)] |
| cgHealth.Name = tc.CacheGroupName(*cache.CacheGroup) |
| if avail.IsAvailable { |
| cgHealth.Online++ |
| totalOnline++ |
| } else { |
| cgHealth.Offline++ |
| totalOffline++ |
| } |
| data[tc.CacheGroupName(*cache.CacheGroup)] = cgHealth |
| } |
| return data, totalOnline, totalOffline |
| } |